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3D3DBridgeman-process Zinc Crystal.
I'm not sure what the Bridgeman process is, but that is said to be how this bar of crystalline zinc was produced.
Source: Anonymous
Contributor: Theodore Gray
Acquired: 8 March, 2008
Text Updated: 8 March, 2008
Price: Anonymous
Size: 1.5"
Purity: >99.9%